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National Geographic MC 90/1250 GoTo Telescope
For automated planetary tracking, the National Geographic MC 90/1250 GoTo Telescope combines a 90mm Maksutov-Cassegrain with 1250mm focal length and a computerized alt-azimuth mount.
- 90mm aperture provides 1.28-arcsecond resolution
- 1250mm focal length uses f/13.9 optics
- GoTo mount includes 27000+ object database
- 50x and 100x eyepieces included
- Moon filter and planisphere included
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Description
Compact computerized planetary observation begins with the National Geographic MC 90/1250 GoTo Telescope, a 90 mm Maksutov-Cassegrain with a 1250 mm focal length and listed f/13.9 optical ratio. Its automatic alt-azimuth GoTo mount includes a 27,000-object database, hand controller, compass, Moon filter, red dot finder, 25 mm and 12.5 mm eyepieces, aluminum tripod, planisphere, and accessory tray for guided lunar, planetary, and selected deep-sky observation.
The folded Maksutov-Cassegrain optical design provides a long focal length within a compact tube, while the computerized mount supports automated target location and tracking after alignment. The system is powered by batteries or suitable 12V equipment, and the optical tube, corrector lens, mount electronics, battery compartment, tripod, and accessories should be protected from moisture, impact, dust, and improper storage.
Key Features of National Geographic MC 90/1250 GoTo Telescope
This computerized Maksutov-Cassegrain package combines a 90 mm aperture with a 1250 mm focal length, f/13.9 optical ratio, automatic alt-azimuth GoTo mount, 27,000-object database, compass, Moon filter, red dot finder, two eyepieces, tripod, and planisphere.
- 90 mm Maksutov-Cassegrain optical system
- 1250 mm focal length with listed f/13.9 optical ratio
- Automatic alt-azimuth GoTo mount
- 27,000-object installed database
- 25 mm and 12.5 mm eyepieces
- Red dot finder and Moon filter
- Integrated compass and planisphere
- Aluminum tripod and accessory tray
Automated Lunar and Planetary Observation
The supplied application focuses on automated observation and tracking of lunar terrain, planets, bright clusters, and other suitable targets, with the 1250 mm focal length supporting the listed long-focus Maksutov format while the GoTo mount provides electronic target location and tracking after correct setup and alignment.
Why Choose National Geographic MC 90/1250 GoTo Telescope
This model is relevant when a compact catadioptric telescope needs computerized target location, long focal length, a large object database, battery or 12V operation, Moon filter, compass, planisphere, tripod, and two eyepieces for guided lunar and planetary observation without the physical length of a conventional long refractor.
- Compact Maksutov-Cassegrain tube with 1250 mm focal length
- GoTo mount with 27,000-object database and compass
- Eyepieces, finder, Moon filter, tripod, tray, planisphere, and controller included
National Geographic 2-Year Limited Warranty
The supplied product information lists a 2-year limited warranty for this telescope, and the applicable US warranty terms, electronics coverage, battery and power conditions, optical coverage, registration requirements, and authorized service process should be confirmed through the current National Geographic or Bresser distribution channel before purchase.
National Geographic MC 90/1250 GoTo Telescope Specs
| Brand | National Geographic |
| Full Model Code | National Geographic 90/1250 Automatic Alt-Azimuth GoTo Maksutov-Cassegrain Telescope (9065000) |
| Country of Origin | China |
| Optical Design | Maksutov-Cassegrain (Catadioptric Spherical Primary with Meniscus Corrector Lens Layout) |
| Aperture | 90 mm (3.54 inches) |
| Focal Length | 1250 mm |
| Focal Ratio | f/13.9 |
| Optical Coatings | Fully Multi-Coated Broad-Band Anti-Reflection Layer Matrix |
| Glass Material | Premium Pyrex Glass Primary Mirror Substrate with BK7 Glass Meniscus Corrector Plate |
| Secondary Mirror Obstruction | 29 mm |
| Secondary Mirror Obstruction by Diameter | 32.2% |
| Secondary Mirror Obstruction by Area | 10.37% |
| Resolving Power | 1.28 Arcseconds (Dawes), 1.53 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 12.5 |
| Highest Useful Magnification | 180x |
| Lowest Useful Magnification | 13x |
| Optical Tube Material | Powder-Coated Aluminum Cylindrical Shell with Molded Composite Rear Cell |
| Focuser Style & Mechanism | Internal Primary Mirror Focusing Mechanism with Precision Lead-Screw Track Baffle Bumper |
| Mirror Lock Mechanism | No |
| Optical Tube Dimensions | 100 mm x 280 mm |
| Optical Tube Weight | 1.40 kg (3.09 lbs) - OTA Only / 4.60 kg (10.14 lbs) - Total System with Mount |
| Mount Attachment Type | Integrated Vixen-Style Dovetail Mounting Rail Attachment Base |
| Finder Scope Specification | Red Dot Projection Finder Sight Array Assembly with Variable Luminance Dial Node |
| Included Accessories | 90mm Maksutov-Cassegrain OTA, Single-Arm Alt-Azimuth GoTo Computerized Mount, Hand Controller (27000+ Object Database), Aluminum Tripod with Accessory Tray, Compass, Two Eyepieces (12.5mm - 100x, 25mm - 50x), Red Dot Finder, Moon Filter, Planisphere |
| Standard Warranty | 2-Year Limited Warranty |
| Application | High-magnification lunar visual surveying and automated compact planetary registration, deploying a folded structural mirror system to yield extreme portability without tracking loss. |
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